170 Davis—Parasitic Fungi of Wisconsin. 
487. Entyloma floerkeae, Holway. 
Mr. Holway’s description of this species, which 
I believe has never been published, is as follows: 
“ Spores globose, rarely elliptical or angular, yel¬ 
lowish brown, thick walled, 10-12 microns in 
diameter. ” The affected portions of the host are 
first whitish, then brown and sere. 
The fungus makes its appearance in early springs 
and the newly formed spores germinate readily, when 
fresh, for three or four weeks. After that a period 
rest is apparently necessary. The promycelia are 
about 3 microns in diameter, and of various 
lengths. The sporida are 4-6 in number, 10-16 
X2£-3 microns. Their bases are in contact, and 
about half of them develop from their tips slender, 
acute bodies 30-60X1^-2 microns, which become 
free. 
SPECIES NOT RECORDED IN THE PRELIMINARY OR 
SUPPLEMENTARY LISTS. 
496. Peronospora hydrophylli, Waite, 
On Hydrophyllum virginicum , L. Racine. 
497. Taphrina alni-incanae, (Kuehn) Magnus. 
On Alnus incana, Willd. Sauk City. (Lueders.) 
Three Lakes. On Alnus , sp. Ashland. (Cheney.) 
Mason. (Cheney.) 
498. Erysiphe aggregata, (Peck) Farlow. 
On Alnus incana , Willd. Dells of the Wiscon¬ 
sin river. 
499. PODOSPHAERA BIUNCINATA, C. & P. 
On Hamamelis virginiana , L. Racine and Som¬ 
ers. 
500. Asterina plantaginis, Ellis. 
On Plantago rugelii, Dcsne. Racine. 
501. Dimerosporium collinsii, (Schw.). Thum. 
On Amelanchier alnifolia, Nutt. Tomahawk. 
(Cheney.) Amelanchier , sp. Blue Mounds. (Che- 
ney.) 
